Cover for a light on top of a taxicab



FIG. 1 is a perspective view of a cover for a light on top of a taxicab showing my new design;

FIG. 2 is a front elevational view thereof, with the rear elevational view being identical;

FIG. 3 is a top view thereof;

FIG. 4 is a right side elevational view, with the left side being identical; and,

FIG. 5 is a bottom view thereof. 

The ornamental design for a cover for a light on top of a taxicab, as shown and described. 